Tire Speed Rating Question
I'm posting this here because the speed rating of a tire seems to me to cross all lines/types of vehicles. Reading up on warranty issues/questions just now, I came across the following language ...
Forum Discussion
Once read for ST tires that for higher speed a percentage higher pressure then acording to the lists, and for better handling quality , also a percentage highening up.
If then the new pressure came above maxloadpressure, pressure needed for the maximum load , so reference-pressure, it may not be more then 10 psi.
So my calculation of 44psi + 10% =48,5 psi already has that percentage , wich I mean to remember 2 x 5% , higher then acording to the list,in this case my extra save list, and so stays under the 50+10 psi , and is allowed.
You are also allowed to drive with 60 psi , thoug it would not be good for grip and keeping the screws in the wood of the TT.
You can even stay at normal rubber valves, wich are allowed a cold pressure of 65 to 70 psi ( depending on the brand) with 26 psi extra for higher temperature in the tire, to the mildest american standard.
This 26 psi makes it possible to fill at 65dgr F a pressure of 70 psi and if the inside tire temperature gets boiling point of water ( 100dgr C/200dgrF?) , wich it can incidentialy get by the heat of the brakes, transported trough the rims, the pressure stays below that 96 psi.
High pressure snap in valves wich are alowed for 90 psi maximum cold pressure , or metal valves for over 150 psi.
If then the new pressure came above maxloadpressure, pressure needed for the maximum load , so reference-pressure, it may not be more then 10 psi.
So my calculation of 44psi + 10% =48,5 psi already has that percentage , wich I mean to remember 2 x 5% , higher then acording to the list,in this case my extra save list, and so stays under the 50+10 psi , and is allowed.
You are also allowed to drive with 60 psi , thoug it would not be good for grip and keeping the screws in the wood of the TT.
You can even stay at normal rubber valves, wich are allowed a cold pressure of 65 to 70 psi ( depending on the brand) with 26 psi extra for higher temperature in the tire, to the mildest american standard.
This 26 psi makes it possible to fill at 65dgr F a pressure of 70 psi and if the inside tire temperature gets boiling point of water ( 100dgr C/200dgrF?) , wich it can incidentialy get by the heat of the brakes, transported trough the rims, the pressure stays below that 96 psi.
High pressure snap in valves wich are alowed for 90 psi maximum cold pressure , or metal valves for over 150 psi.
